How would you fix the Reverse Mushroom to make it more balanced?

I haven't heard if we would see this item return or not but regardless I believe we all agree it could use a rework. It is one of my favorite items of all time and wanna see it come back and am interested to see if anyone can come up with a way to make it more fair. My ideas so far are either:

• Make it cost more money, say 15-20 coins

• Make it so you can't interact with board events while going backwards, so you can't use Boo, pay Monty Mole, etc until the turn after you use Reverse Mushroom.

• Make it so you can't target yourself, only other players

I personally like the second idea more but how would you balance it?